package com.sky.mapper;

import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.*;

import java.util.List;

@Mapper
public interface ShoppingCartMapper {
    /**
     * 查询购物车
     * @param shoppingCart
     * @return
     */
    List<ShoppingCart> selectDishOrSetmeal(ShoppingCart shoppingCart);

    /**
     * 重复商品,更新购物车数量
     * @param shoppingCart
     */
    @Update("update  shopping_cart set number=#{number} where id=#{id}")
    void updateById(ShoppingCart shoppingCart);

    /**
     * 不重复商品,添加购物车
     * @param shoppingCart
     */
    @Insert("insert into shopping_cart(name, image, user_id, dish_id, setmeal_id, dish_flavor,number, amount, create_time) " +
            "VALUES(#{name} ,#{image},#{userId},#{dishId},#{setmealId},#{dishFlavor},#{number},#{amount},#{createTime})")
    void insert(ShoppingCart shoppingCart);

    /**
     * 根据id清空购物车
     * @param userId
     */
    @Delete("delete from shopping_cart where user_id=#{userId}")
    void clean(Long userId);

    /**
     * 购物车商品数量减1-只有一份时,删除该商品
     * @param id
     */
    @Delete("delete from shopping_cart where id=#{id}")
    void deleteById(Long id);

    /**
     * 批量插入购物车数据
     *
     * @param shoppingCartList
     */
    void insertBatch(List<ShoppingCart> shoppingCartList);
}
